Sounds to me as if you have the wrong codes... Easiest way is to use cheat engine and cheat by yourself. This always works.

Second solution would be to check those codes again. What is the source? Have you taken into account that there are different codes for different versions? It is not just like renaming the file to the new crc and codes of other regions work as well. Sometimes there are more than one version of a game (like remastered/international,...) and cheats would only work for one version (just check crc) but I don't think that there are many examples for the ps2.

A couple of days ago I think somebody said that cheats with beginning non-zero are seldom. All your cheats begin with a 2 which would correspond to not using RAW-cheats but some encoded ones. Than the question would be: What is the source? (again)

I'd recommend just using the codes that are here in the official thread.

I'm curious why you want to play the PAL/EU version of the game that runs at 50Hz instead of the NTSC version which runs at normal speed.

Here are the proper codes available in quotes below.
Be sure to remove the // from any codes you want to use. Some of them require additional changes to get working, read the entire code for that info.
I've also included the necessary PNACH filename in the comment.
If you're playing the game on PC you might as well use the FFXII Editor instead. Does a lot of awesome things moreso than just using PNACH codes.